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Rheumatol Int., 2005; 25(6): 457-64, PMID: 15761729

Digital radiogrammetry as a new diagnostic tool for estimation of disease-related osteoporosis in rheumatoid arthritis compared with pQCT

Jahr: 2005

Böttcher J, Pfeil A, Heinrich B, Lehmann G, Petrovitch A, Hansch A, Heyne JP, Mentzel HJ, Malich A, Hein G, Kaiser WA
Institute of Diagnostic and Interventional Radiology, Friedrich-Schiller-University Jena, Erlanger Allee 101, 07747, Jena, Germany. joachim.boettcher@med.uni-jena.de

Abstract

OBJECTIVES: To investigate the potential of a new osteogeometric technology based on digital X-ray radiogrammetry (DXR) as a diagnostic tool for quantification of severity-dependent osteoporosis, and to distinguish between inflammation-mediated and corticoid-induced variations of bone mineralisation in patients suffering from rheumatoid arthritis. METHODS: Ninety-six patients (duration of disease: <18 months) underwent retrospective calculations of bone mineral density (DXR-BMD) and metacarpal index (MCI) by DXR, which were calculated from plain radiographs of the non-dominant hand. For comparison, pQCT-calculated BMD (total, cortical-subcortical and trabecular partition of bone tissue) was done on the distal radius. Severity was classified using Ratingen Score by two independent radiologists, and divided into three main groups. In addition, the patients were separated into those with corticoid medication (n=44; 5 mg/day over a half year period) and a control group (n=52) without any corticoid therapy. RESULTS: Correlations between DXR-BMD and MCI versus pQCT parameters were all significant (0.36
GID: 1180; Letzte Änderung: 03.03.2008